TWI710812B - Optical communication module and optical assembly - Google Patents

Abstract

An optical communication module comprise a main body, a light-emitting unit, a light fiber assembly, an optical assembly and a light-receiving unit. The optical assembly has an engagement groove. A first filter is arranged on the engagement groove. The engagement groove has a plurality of pillar structure. The light-receiving unit has a base, the base is arranged on the engagement groove and the pillar structure against the wall of the base. A light-receiving member are arranged on the base and the light-receiving member is arranged to face the first filter. The optical assembly has a first filter groove, a second filter groove and a lens structure, the lens structure is located between the first filter groove and the second filter groove.

Description

Optical communication modules and optical components

The invention relates to an optical communication module and an optical element, in particular to an optical communication module with an optical receiver and an optical transmitter, and an optical element arranged in the optical communication module.

The existing common optical communication module, especially the duplex optical subassembly (Bi-directional optical subassembly, BOSA) with optical transmitter and optical receiver, roughly includes a housing, an optical receiver, and an optical transmitter. And a fiber optic assembly. The installation method of the light receiver of the existing duplex optical sub-module is roughly as follows: first install the light receiver in the cavity of the housing, and then apply UV glue between the light receiver and the inner wall of the housing. Then, perform the optical coupling operation on the optical receiver and the optical fiber assembly. After the optical receiver is confirmed by the optical coupling operation, the UV glue is cured by the related equipment, thereby completing the installation of the optical receiver.

The above-mentioned existing light receiver installation methods have many problems. For example, since the appearance of the light receiver is roughly cylindrical, and the housing groove is also cylindrical, UV glue is very It is difficult to be evenly coated between the housing and the light receiver, so that it is difficult to accurately control the position of the light receiver relative to the housing during the light coupling operation. As a result, the light coupling efficiency is low. Furthermore, in order to prevent the UV glue from changing too much in volume after curing, and then changing the relative position of the light receiver and the housing, relevant manufacturers must choose UV glue with low expansion coefficient, but the price of UV glue with low expansion coefficient is very high. Expensive, resulting in a substantial increase in production costs.

The main purpose of the present invention is to provide an optical communication module to improve the installation method of the optical receiver of the existing duplex optical submodule, which has the problems of high production cost and low light coupling efficiency.

In order to achieve the above objective, the present invention provides an optical communication module, which includes: a body, a light emitting unit, a first filter, a second filter, an optical fiber assembly, an optical element, and a light receiving unit. One side of the main body is concavely formed with a accommodating groove. The main body has a light emitting port, a light receiving port and a light passage port. The light emitting port, light receiving port and light passage port are respectively provided through the main body to correspond to and accommodate The slots are connected. The light emitting unit is arranged on the body and the light emitting port is sealed. The light emitting unit can emit a light beam of a first predetermined wavelength, and the light beam emitted by the light emitting unit can enter the containing groove through the light emitting port. The first filter can pass a light beam of a second predetermined wavelength, which is different from the first predetermined wavelength. The second filter can pass the light beam of the first predetermined wavelength. The optical fiber assembly is fixedly provided with a body and correspondingly shields the light channel opening. The optical fiber assembly includes an optical fiber for transmitting the light beam emitted by the light emitting unit and the light beam transmitted from the external electronic device. The optical element is fixedly arranged in the accommodating groove, and the optical element includes: a locking groove, a plurality of convex column structures, a first filter groove, a second filter groove, a lens structure and an optical fiber groove. The locking groove is formed by a recess on one side of the optical element. The side wall forming the locking groove is defined as a bottom wall and a ring side wall. The ring side wall is connected to the periphery of the bottom wall, and the bottom wall is located at the bottom of the locking groove. A plurality of convex column structures are arranged in the engaging groove, and each convex column structure is connected with the ring side wall. The first filter groove is concavely formed from the bottom wall facing the optical element opposite to the end where the engaging groove is formed, and the first filter groove is used for setting the first filter. The second filter groove is located at an end of the optical element opposite to the engaging groove formed thereon. The second filter groove is used for arranging the second filter so that the second filter is obliquely arranged on the optical element at a predetermined angle. The lens structure is located between the second filter groove and the first filter groove. The lens structure and the optical element are integrally formed. The lens structure has a first convex surface facing the first filter groove, and the lens structure faces the second filter groove. The mirror groove has a second convex surface. The fiber groove is used to accommodate the part of one end of the fiber component. The light receiving unit includes a base, a light receiver and a plurality of pins. One side of the base is recessed There is a groove, and the side walls forming the groove are defined as a fixed bottom wall and a ring fixed wall. The ring fixed wall is connected to the periphery of the fixed bottom wall. The light receiver is fixedly arranged on the fixed bottom wall; one end of the plurality of pins is fixedly arranged on the fixed bottom wall. The bottom wall is electrically connected with the light receiver; the base is arranged in the engaging groove, and the plurality of convex column structures correspond to the outer side surface of the top ring fixing wall, so that the base is fixedly arranged in the engaging groove. Wherein, the optical element is fixedly arranged in the accommodating groove, and the light beam emitted by the light emitting unit can pass through the second filter and enter the optical fiber to be transmitted outward through the optical fiber; the light beam transmitted by the external electronic device through the optical fiber passes through the second filter. After the reflection of the filter, it passes through the lens structure and the first filter successively, and then enters the light receiver; wherein, the optical element is concavely formed with a first reflection groove on the side where the optical fiber groove is formed. The bottom wall of the first reflection groove is inclined, and the bottom wall of the first reflection groove can reflect the light beam emitted by the light emitting unit.

The embodiment of the present invention also discloses an optical element, which is used to be fixedly arranged in a body of an optical communication module. The body has a accommodating slot. The optical communication module has a light emitting unit, an optical fiber assembly, and a A filter, a second filter and a light receiving unit. The optical element includes: a locking groove, a plurality of convex column structures, a first filter groove, a second filter groove and a lens structure. The locking groove is formed by a recess on one side of the optical element. The side wall forming the locking groove is defined as a bottom wall and a ring side wall. The ring side wall is connected to the periphery of the bottom wall, and the bottom wall is located at the bottom of the locking groove. A plurality of convex column structures are arranged in the engaging groove, and each convex column structure is connected with the ring side wall. The first filter groove is concavely formed from the bottom wall facing the optical element opposite to the end where the engaging groove is formed, and the first filter groove is used for setting the first filter. The second filter groove is located at an end of the optical element opposite to the end formed with the engaging groove. The second filter groove is used for arranging the second filter so that the second filter is obliquely arranged on the optical element at a predetermined angle. The lens structure is located between the second filter groove and the first filter groove. The lens structure and the optical element are integrally formed. The lens structure has a first convex surface facing the first filter groove. The lens structure faces the second filter groove. The mirror groove has a second convex surface. The optical fiber groove is used for accommodating one end of the optical fiber assembly. Among them, the optical element is fixedly arranged in the accommodating groove, and the light beam transmitted by the external electronic device through the optical fiber, after being reflected by the second filter, will pass through the lens structure and the first filter successively, and enter the light Receiver; wherein, the optical element opposite to the side where the optical fiber groove is formed is concavely formed with a first reflection groove, the bottom wall of the first reflection groove is inclined, and the first reflection groove The bottom wall can reflect the light beam emitted by the light emitting unit.

The beneficial effect of the present invention may be that the optical element of the present invention can be used to fix the first filter, the second filter and the light receiving unit, thereby greatly improving the light coupling efficiency. In the optical communication module of the present invention, the light receiving unit is fixedly arranged on the optical element through a plurality of convex column structures, and the light receiving unit can be fixed without using UV glue, thereby greatly reducing the production cost.

100: Optical communication module

10: body

101: holding tank

1011: opening

102: light emitting port

103: Optical channel port

104: Optical receiving port

11: auxiliary fixture

20: Light emitting unit

21: Pedestal

22: light transmitter

23: Pin

24: Lid

241: Groove

242: Piercing

25: lens

30: Fiber optic components

31: Optical fiber kit

32: Optical fiber

33: fixed shell

40: optical components

40s: gap

401: snap slot

4011: bottom wall

4012: Ring side wall

402: convex column structure

402A: convex column structure

402B: convex column structure

4021: side

403: The first filter slot

404: Second filter slot

405: lens structure

4051: First convex surface

4052: Second convex surface

406: Fiber Slot

407: first reflection groove

4071: bottom wall

408: second reflection groove

4081: bottom wall

50: The first filter

60: Second filter

70: Optical receiving unit

71: Pedestal

71s: groove

711: fixed bottom wall

712: Ring Fixed Wall

72: Optical receiver

73: Pin

SP: closed space

D1, D2, D3: length

θ 1, θ 2, θ 3: included angle

C: Optical axis

FIG. 1 is a schematic diagram of the assembly of the optical communication module of the present invention.

FIG. 2 is a schematic diagram from another perspective of the optical communication module of the present invention.

Fig. 3 is an exploded schematic diagram of the optical communication module of the present invention.

FIG. 4 is a schematic diagram of the optical element of the optical communication module of the present invention.

FIG. 5 is a schematic diagram of another viewing angle of the optical element of the optical communication module of the present invention.

6 is a schematic cross-sectional view of the optical element of the optical communication module of the present invention.

FIG. 7 is a schematic cross-sectional view of the optical communication module of the present invention.

Fig. 8 is a schematic front view of Fig. 7.

Fig. 9 is a partial enlarged schematic diagram of Fig. 8.

10 is a schematic cross-sectional view of the optical communication module of the present invention taken along the section line X shown in FIG. 2.

11 is a schematic cross-sectional view of another embodiment of the optical communication module of the present invention.

The following is a specific example to illustrate the implementation of the optical communication module and optical element of the present invention. In the following description, if it is pointed out, please refer to the specific drawing or as shown in the specific drawing, which is only for It is emphasized that in the follow-up description, most of the related content appears in the specific drawing, but it is not limited to only refer to the specific drawing in the follow-up description.

Please refer to FIGS. 1 to 3 together. FIG. 1 is a combination diagram of the optical communication module of the present invention. Intention; Figure 2 is an exploded schematic view of the optical communication module of the present invention; Figure 3 is an exploded schematic view of the optical communication module of the present invention from another perspective. The optical communication module 100 includes a main body 10, a light emitting unit 20, an optical fiber assembly 30, an optical element 40, a first filter 50, a second filter 60 and a light receiving unit 70.

As shown in FIG. 3, one side of the main body 10 is concavely formed with a receiving groove 101, and the receiving groove 101 is not provided through the main body 10. The main body 10 has a light emitting port 102, a light channel port 103 and a light receiving port 104. The light emitting port 102, the light channel port 103, and the light receiving port 104 are respectively provided through the main body 10, and respectively communicate with the accommodating groove 101. The light emitting port 102 and the light channel port 103 are arranged facing each other, and the light receiving port 104 is located between the light emitting port 102 and the light channel port 103.

An opening 1011 of the accommodating groove 101, the light emitting port 102, the light channel port 103 and the light receiving port 104 are respectively formed on different sides of the main body 10. In a specific application, the side wall with the light emitting port 102 and the side wall with the light channel opening 103 are parallel to each other, and the side wall with the light emitting port 102 and the side wall with the light receiving port 104 are perpendicular to each other.

The appearance, size, material, etc. of the main body 10 can be changed according to requirements and are not limited here. For example, the main body 10 may be made of a metal material, such as stainless steel. Regarding the opening 1011 of the accommodating groove 101, the diameter and appearance of the light emitting port 102, the light channel port 103, and the light receiving port 104 can be changed according to requirements, and are not limited to those shown in the figure.

In a specific implementation, the light emitting port 102 and the light channel port 103 may have the same central axis (for example, parallel to the X axis shown in FIG. 3), and the central axis of the light receiving port 104 (parallel to the center axis shown in FIG. 3) The Z axis shown) and the central axis of the light emitting port 102 (parallel to the X axis shown in FIG. 3) may be perpendicular to each other.

As shown in FIG. 3, the light emitting unit 20 includes a base 21, a light emitter 22, a plurality of pins 23, a cover 24 and a lens 25. The light emitter 22 is fixedly arranged on the base 21, the light emitter 22 can emit a light beam of a first predetermined wavelength, and one end of the plurality of pins 23 is fixedly arranged on the base 21. The base 21 can also be configured to control The electronic components such as the microprocessor of the optical transmitter 22 are made, and the plurality of pins 23 are electrically connected to the optical transmitter 22, the microprocessor and other electronic components, and the external electronic equipment can transmit electrical signals, Electricity is sent to the light emitter 22, the microprocessor and other electronic components, and the light emitter 22 is controlled accordingly. The aforementioned first predetermined wavelength may be, for example, 1310 nm or 1550 nm, but it is not limited to this, and can be selected according to requirements.

A groove 241 is concavely formed on one side of the cover body 24, and the side of the cover body 24 where the groove 241 is formed is fixedly arranged on the side of the base 21 where the light emitter 22 is arranged, and the cover body 24 and the base 21 A closed space SP (as shown in FIG. 7) will be formed together, and the light emitter 22 is correspondingly located in the closed space SP. The cover 24 has a through hole 242 at one end away from the groove 241, the lens 25 is fixed to the cover 24, and the lens 25 seals the through hole 242. When the cover 24 is fixed on the base 21, the light emitter 22 is correspondingly located on the optical axis of the lens 25; the lens 25 may be any structure that can concentrate the light beam emitted by the light emitter 22, such as a convex lens.

The light emitting unit 20 may pass through an auxiliary fixing member 11 and be fixedly disposed on the side wall of the body 10 where the light emitting port 102 is formed. Specifically, the auxiliary fixing member 11 may be a hollow tubular structure, the auxiliary fixing member 11 may be a metal material, and the auxiliary fixing member 11 can be fixed to one side of the body 10 through welding or the like, and the light emitting unit 20 may be through welding. , Bonding, etc., fixed to the auxiliary fixing member 11. In different applications, the auxiliary fixing member 11 and the body 10 may also be integrally formed. As shown in Figures 7 and 8, when the light emitting unit 20 and the auxiliary fixing member 11 are fixedly arranged on the side wall of the body 10 where the light emitting port 102 is formed, the light beam emitted by the light emitter 22 can pass through the lens 25 and the light emitting The port 102 enters the body 10.

In the actual production process, the auxiliary fixing member 11 may be fixed to the main body 10 first, and then a glue (for example, UV glue) is arranged between the cover body 24 and the inner wall of the auxiliary fixing member 11, thereby, When the transmitter 22 performs light coupling operation, it can adjust the position of the light emitting unit 20 relative to the main body 10 through related equipment; after the light coupling operation is completed, the colloid can be cured by related curing means.

The optical fiber assembly 30 is fixedly provided with the body 10, and the optical fiber assembly 30 correspondingly shields light At the crossing 103, the optical fiber assembly 30 may include an optical fiber set 31 (ferrule), at least one optical fiber 32 and a fixed housing 33. The optical fiber set 31 covers a part of the optical fiber 32. The optical fiber set 31 is made of ceramic material, for example. Into a rod-like structure. The optical fiber 32 is used to transmit the light beam emitted by the light emitting unit 20 and the light beam transmitted from an external electronic device. The fixed housing 33 is arranged to cover the optical fiber kit 31 and the optical fiber 32. The fixed housing 33 may be made of metal, for example, and the fixed housing 33 may be laser welding or the like, and is fixedly arranged on the main body 10 to form an optical channel opening 103. Side wall. In the actual production process, the optical fiber 32 can be coupled by adjusting the position of the fixed housing 33 relative to the main body 10; after the optical coupling of the optical fiber 32 is completed, laser welding can be used to fix the optical fiber 32. The housing 33 and the main body 10 are fixed to each other.

Please refer to FIGS. 4 to 6 together. FIG. 4 is a schematic diagram of the optical element of the optical communication module of the present invention; FIG. 5 is a schematic diagram of the optical element from another perspective; FIG. 6 is a schematic cross-sectional view of the optical element. One side of the optical element 40 is concavely formed with a locking groove 401. The side walls forming the locking groove 401 are defined as a bottom wall 4011 and a ring side wall 4012. The bottom wall 4011 is located at the bottom of the locking groove 401. The ring side wall 4012 and the bottom wall The periphery of 4011 is connected, and the ring side wall 4012 is arranged around the bottom wall 4011. In this embodiment, the shape of the engaging groove 401 is roughly cylindrical, but not limited to this. The shape of the engaging groove 401 can be changed according to requirements. For example, the engaging groove 401 may also be It appears as an elliptical cylinder, a square cylinder, etc.

The optical element 40 also includes four protruding pillar structures 402, the four protruding pillar structures 402 are connected to the ring sidewall 4012, and each of the protruding pillar structures 402 is formed by extending the ring sidewall 4012 to the center of the engaging groove 401. Each protruding pillar structure 402 may be roughly presented as a triangular pillar structure, and one side 4021 of the triangular pillar structure faces the center position of the engaging groove 401. In a specific application, the convex column structure 402 is integrally formed with the optical element 40, and two of the four convex column structures 402 may be disposed substantially facing each other, and the other two convex column structures 402 are the same. Are arranged facing each other, the four protrusion structures 402 may be roughly located at the equal positions of the engaging groove 401, that is, the distance between the two adjacent protrusion structures 402 is approximately the same. with. The position, quantity, and appearance of the bump structure 402 can be changed according to requirements, and the figure shown is only one of the exemplary aspects.

It should be noted that, please refer to FIGS. 5 and 8 together. In the embodiment where the optical element 40 has three protruding pillar structures 402, the relevant personnel or machinery is fixing the base 71 of the light receiving unit 70 to the engagement During the process of the groove 401, special attention must be paid to whether the base 71 is skewed relative to the optical element 40 in the XY plane shown in FIG. 2; relatively, in the embodiment of the optical element 40 with four convex post structures 402 In this case, the base 71 is fixedly arranged in the engaging groove 401, and the above-mentioned skew problem is unlikely to occur.

As shown in FIGS. 5 and 8, the bottom wall 4011 forming the engaging groove 401 has a first filter groove 403 concavely formed on the side away from the optical element 40 where the engaging groove 401 is formed. The first filter slot 403 is used for setting the first filter 50. The size of the first filter groove 403 may be slightly larger than the size of the first filter 50, and the first filter 50 may be fixedly arranged in the first filter groove 403 using glue. The shape and size of the first filter 50 and the geometric design of the shape and size of the first filter groove 403 can be changed according to requirements. The figure shown in the figure is only an exemplary aspect. The first filter 50 may be a filter that allows light beams with a second predetermined wavelength to pass. For example, the first filter 50 may be a light beam with a wavelength of 1490 nanometers. The predetermined wavelength is different from the above-mentioned first predetermined wavelength.

As shown in FIGS. 4, 6, 8 and 9, the optical element 40 is formed with a second filter groove 404 opposite to the end where the engaging groove 401 is formed. The second filter groove 404 roughly corresponds to the first filter. The mirror groove 403 is provided (as shown in FIG. 6). The second filter slot 404 is used to set the second filter 60, and when the second filter 60 is set in the second filter slot 404, the second filter 60 will be set at a predetermined angle with respect to the optical element 40, for example In other words, when the second filter 60 is disposed in the second filter groove 404, the angle θ 1 between the second filter 60 and the optical axis C of the lens 25 of the light emitter 22 is 45 degrees, but it is not limited to this. , The shape of the second filter groove 404 can be correspondingly changed according to requirements to correspondingly change the angle θ 1 between the second filter 60 and the optical axis C.

The size of the second filter groove 404 may be slightly larger than the size of the second filter 60, and The second filter 60 may be fixedly arranged in the second filter groove 404 using glue. The shape and size of the second filter 60 and the geometric design of the shape and size of the second filter groove 404 can be changed according to requirements. The figure shown in the figure is only an exemplary aspect. The second filter 60 may be a filter that passes a light beam conforming to the aforementioned first predetermined wavelength. In this embodiment, the first filter 50 and the second filter 60 are both rectangular cubes as an example, but the appearance of the first filter 50 and the second filter 60 can be changed according to requirements.

As shown in FIG. 6, the optical element 40 is provided with a lens structure 405 between the first filter groove 403 and the second filter groove 404, and the lens structure 405 is formed with a first convex on one side of the first filter groove 403. Outside the surface 4051, a second convex surface 4052 is formed on the side of the lens structure 405 facing the second filter groove 404. The lens structure 405 is integrally formed with the optical element 40, and the lens structure 405 can pass the light beam of the first predetermined wavelength and the light beam of the second predetermined wavelength. In a specific application, the first convex surface 4051 and the second convex surface 4052 are respectively multiple curved surfaces.

It should be noted that, as shown in FIGS. 6 and 8, the lens structure 405 is located in the range of the orthographic projection of the first filter 50 toward the second filter 60; the lens structure 405 is also located in the direction of the second filter 60. In the orthographic projection range of the direction of the first filter 50. In other words, the first filter 50 and the second filter 60 generally shield the first convex surface 4051 and the second convex surface 4052, respectively.

As shown in FIGS. 5, 6 and 8, one side of the optical element 40 is concavely formed with an optical fiber groove 406, and the optical fiber groove 406 is used for accommodating the optical fiber 32 and the optical fiber kit 31 of the optical fiber assembly 30. The engaging groove 401 and the second filter groove 404 are respectively formed on opposite end surfaces of the optical element 40, and the side surface where the fiber groove 406 is formed is perpendicular to the side surface where the engaging groove 401 is formed. The shape of the optical fiber groove 406 may be designed according to the shape of the optical fiber kit 31.

As shown in Figure 1, Figure 3, Figure 7 and Figure 8, the optical element 40 is fixedly disposed in the accommodating groove 101 of the main body 10, the engaging groove 401 is correspondingly disposed facing the light receiving port 104, and the optical fiber groove 406 is It is set corresponding to the light channel port 103, the second filter 60 is set facing the light emitting port 102, and the light emitter 22 of the light emitting unit 20 emits The emitted light beam can directly illuminate the second filter 60.

In particular, the corners of the optical element 40 where the second filter groove 404 is formed may be formed with a gap 40s, and the second filter groove 404 is directly exposed to the outside; thus, as shown in FIG. 8, when When the optical element 40 is fixedly arranged in the main body 10, the light beam emitted by the light emitter 22 of the light emitting unit 20 passes through the light emitting port 102 and directly enters the second filter 60 through the gap 40s, that is, passes through the optical element The gap 40s of 40 is designed, the light beam emitted by the light emitter 22 will not pass through the optical element 40 before entering the second filter 60.

Please refer to FIGS. 3, 7 and 8 together. The light receiving unit 70 includes a base 71, a light receiver 72 and a plurality of pins 73. One side of the base 71 is concavely formed with a groove 71s. The side walls forming the groove 71s are defined as a fixed bottom wall 711 and a ring fixed wall 712. The ring fixed wall 712 is connected to the periphery of the fixed bottom wall 711 and the light receiver 72 is fixed. It is arranged on the fixed bottom wall 711, and the fixed bottom wall 711 can also be provided with a microprocessor and electronic components for controlling the light receiver 72 according to requirements. The shape of the base 71 and the shape of the groove 71s can be changed according to requirements. In this embodiment, the base 71 is roughly cylindrical as an example, but it is not limited to this. In special applications , It can also be rectangular column shape. The optical receiver 72 is used to receive the light beam having the aforementioned second predetermined wavelength transmitted by the external electronic device through the optical fiber 32.

One end of the plurality of pins 73 is fixedly disposed on the fixed bottom wall 711, and the plurality of pins 73 are electrically connected to the optical receiver 72 and the microprocessor disposed on the fixed bottom wall 711. The number and appearance of the plurality of pins 73 are not limited to those shown in the figure. The multiple pins 73 are used to transmit electrical signals between the external electronic device, the microprocessor, and the optical receiver 72.

As shown in FIGS. 7 to 9, the light receiving unit 70 is correspondingly fixedly arranged in the engaging groove 401, and the plurality of convex column structures 402 are correspondingly pressed against the outer side of the ring fixing wall 712 of the light receiving unit 70. Specifically, the outer diameter of the ring fixing wall 712 is smaller than the inner diameter of the engaging groove 401, and the difference between the outer diameter of the ring fixing wall 712 and the inner diameter of the engaging groove 401 is approximately equal to the protrusion of each convex post structure 402 The length D1 of the side wall 4012 of the ring.

As shown in Figure 8, in a specific implementation, the outer diameter of the fixed bottom wall 711 can be Larger than the outer diameter of the ring fixing wall 712; when the light receiving unit 70 is disposed in the locking groove 401, most of the ring fixing wall 712 can be received in the locking groove 401, and the fixing bottom wall 711 can be Correspondingly, the side wall of the optical element 40 is formed with the engaging groove 401. By making the outer diameter of the fixing bottom wall 711 larger than the outer diameter of the ring fixing wall 712, when the related device fixes the light receiving unit 70 in the engaging groove 401, it can be seen whether the fixing bottom wall 711 has abutted against the optical The element 40 is formed with the side wall of the engaging groove 401 to determine whether the light receiving unit 70 has been correctly installed in the engaging groove 401, thereby ensuring that the light receiver 72 is installed in the correct position relative to the optical element 40.

As shown in FIG. 8, when the light emitting unit 20, the optical fiber assembly 30, the optical element 40 and the light receiving unit 70 are fixedly arranged on the body 10, the light beam emitted by the light emitter 22 of the light emitting unit 20 will enter the body through the lens 25 After passing through the second filter 60 directly, it passes through the optical element 40 between the fiber groove 406 and the second filter 60, and then enters the optical fiber 32, and then passes through the optical fiber 32 to the outside. In different applications, it is also possible to remove the part of the optical element 40 between the fiber groove 406 and the second filter 60, so that the light beam emitted by the light emitter 22 after passing through the second filter 60 is Go directly to the optical fiber 32.

As shown in FIG. 8, when the optical fiber 32 transmits the light beam from the external electronic device, after the light beam is emitted from the end face of the optical fiber 32 facing the fiber groove 406, it will pass through the optical fiber groove 406 and the second filter 60. The optical element 40 is reflected by the second filter 60, and is turned from the direction along the optical axis C of the light emitter 22 (the X-axis direction as shown in the figure) to the direction perpendicular to the optical axis C (as shown in the figure) (Shown in the Z-axis direction), then pass through the lens structure 405 and the first filter 50 in sequence, and then enter the light receiver 72.

The specific production method of the optical element 40 and the light receiving unit 70 of the above-mentioned optical communication module 100 can be (for detailed description of the components described in the following description, please refer to the above opening description): a trial production stage, which includes: An optical component production step: using a mold to produce the above-mentioned optical component 40; A light receiving unit production step: the base 71 of the light receiving unit 70, the light receiver 72 and a plurality of pins 73 are successively produced and assembled into the light receiving unit 70; an installation step: the above two steps are produced The optical element 40 and the light receiving unit 70 are assembled with each other so that the light receiving unit 70 passes through the plurality of protrusion structures 402 of the optical element 40 and is fixed in the engaging groove 401; a detection step: the light receiving unit 70 is coupled Light homework.

After the above detection step, if it is confirmed that the light receiving unit 70 and the optical element 40 meet the predetermined light coupling requirements, then continue a mass production step, otherwise, perform the following steps: a mold repair step: based on the results of the above detection step , The mold is modified to change the length of the plurality of protrusion structures 402 protruding from the annular side wall 4012; after the above-mentioned mold trimming step is performed, the above-mentioned optical element molding step will be performed with the modified mold, and then Continue the above-mentioned installation steps and the above-mentioned inspection steps; if the optical components produced by the modified mold undergo the above-mentioned testing steps in the trial production stage, and it is confirmed that the light receiving unit 70 and the optical component 40 meet the predetermined light coupling requirements, Then continue the mass production steps.

The mass production step is to repeat the above-mentioned optical element production step (production with the mold that has passed the inspection step of the trial production stage), the above-mentioned light receiving unit production step, the above-mentioned installation step, and the above-mentioned inspection step, to Mass production and assembly of light receivers and optical components.

Through the above-mentioned production method of the optical element 40 and the light receiving unit 70 of the optical communication module 100, the optical element 40 and the light receiving unit produced in the mass production step can be used. 70 has high assembly yield and high light coupling efficiency, that is, most of the optical elements 40 and light receiving units 70 produced through mass production steps will easily meet the predetermined light coupling requirements.

Please refer to FIGS. 9 and 10 together. The length D1 of each protrusion structure 402 extending from the ring side wall 4012 to the inner direction of the engaging groove 401 may be the production error of the engaging groove 401 or the production error value of the ring side wall 4012. The relevant production personnel can be based on the actual production of the outer diameter of the ring fixing wall, the inner diameter of the ring side wall 4012 of the engaging groove 401, and the length of each protrusion structure 402 protruding from the ring side wall 4012 in the above-mentioned trial production stage. And the light coupling condition in the above detection step is determined by the length of each protrusion structure 402 protruding from the annular side wall 4012 in the mass production stage.

Specifically, as shown in FIG. 9, it is assumed that the lengths of the four protruding pillar structures 402 protruding from the annular side wall 4012 are the same as each other in the trial production stage, but in the inspection step in the trial production stage, the relevant personnel or The device finds that the ring fixing wall 712 must move to the upper right in FIG. 9 relative to the optical element 40 to enable the light receiving unit 70 to meet the predetermined light coupling requirements. At this time, relevant personnel will perform the above-mentioned mold-repairing steps to change the length of the two protruding pillar structures 402 located at the upper right and lower left in FIG. 9 protruding from the annular side wall 4012. As shown in Figure 10, the optical element 40 produced by the relevant personnel after the above-mentioned mold-repairing step and using the modified mold has the convex post structure 402A at the lower left position in the figure protruding from the length D2 of the ring side wall 4012, which is The protrusion structure 402B located at the upper right position in the figure protrudes from the length D3 of the ring side wall 4012, while the remaining protrusion structure 402 protrudes from the ring side wall 4012 to maintain the length D1 indicated in FIG. 9. In this way, light The receiving unit 70 should be able to meet the predetermined light coupling requirements; if the relevant personnel determine that the light receiving unit 70 shown in FIG. 10 really meets the predetermined light coupling requirements, the modified mold will be available in the subsequent mass production steps. Mass production of optical elements 40.

As mentioned above, depending on the conditions of the trial production stage, in the above-mentioned mass production step, in order to make the light receiving unit 70 meet the predetermined light coupling requirements, in the mass production step, there will be four bump structures 402. The optical element 40 is modified to have only three protrusion structures 402.

Please refer to FIGS. 6, 8 and 11 together. In practical applications, the side of the optical element 40 opposite to the fiber groove 406 may be concavely formed with a first reflection groove 407. The bottom wall 4071 of the first reflection groove 407 is inclined, and an angle θ 2 is formed between the bottom wall 4071 of the first reflection groove 407 and an axis perpendicular to the optical axis C of the lens 25 of the light emitter 22. Through the above design, when the light beam emitted by the light emitter 22 irradiates the bottom wall 4071 of the first reflection groove 407, it will be reflected by the bottom wall 4071 to the direction other than the optical axis C. In this way, it will be avoided to irradiate to the The light beam from the bottom wall 4071 of a reflection groove 407 is directly reflected back to the light transmitter 22, which causes interference. In a specific implementation, the included angle θ 2 may be between 5 degrees and 10 degrees.

In particular, during the production process of the optical element 40, the first reflecting groove 407 can also be used as a drafting groove of the optical element 40, and the inclination direction of the bottom wall 4071 of the first reflecting groove 407 may be based on the optical element 40 The design of the drawing direction is not limited to that shown in the figure. In addition, in order to enable the bottom wall 4071 of the first reflecting groove 407 to effectively reflect the light beam to the direction other than the optical axis C, the bottom wall 4071 of the first reflecting groove 407 may be coated with a reflecting layer, or it may be an opposite bottom wall. Wall 4071 is polished.

In practical applications, the bottom wall forming the fiber groove 406 can also be recessed inward to form a second reflection groove 408, the bottom wall 4081 of the second reflection groove 408 is inclined, and the bottom wall 4081 of the second reflection groove 408 is An included angle θ 3 is formed between an axis perpendicular to the optical axis C of the lens 25 of the light emitter 22. Through the above design, when the light beam transmitted by the external electronic device through the optical fiber 32 irradiates the bottom wall 4081 of the second reflecting groove 408, it will be reflected by the bottom wall 4081 to the direction other than the optical axis C, thus avoiding the irradiation The light beam reaching the bottom wall 4081 of the second reflection groove 408 is directly reflected back to the optical fiber 32, thereby causing interference problems. As shown in FIG. 11, in practical applications, the optical fiber 32 is located in the orthographic projection range of the bottom wall 4081 of the second reflection groove 408 toward the optical fiber 32, that is, the end surface of the optical fiber 32 completely faces the second reflection groove. The bottom wall 4081 of the 408 is set. In a specific implementation, the included angle θ 3 may be between 7 degrees and 15 degrees. In addition, in order to enable the bottom wall 4081 of the second reflection groove 408 to effectively reflect the light beam to the direction other than the optical axis C, the bottom wall 4081 of the second reflection groove 408 may be coated There is a reflective layer, or the bottom wall 4081 may be polished.

As mentioned above, the design of the optical communication module 100 of the present invention through the optical element 40 will greatly improve the light coupling efficiency, and the optical receiver 72 of the optical communication module 100 of the present invention may not use a low expansion coefficient The UV glue is fixed, so that the overall production cost of the optical communication module 100 can be greatly reduced.

The above descriptions are only the preferred and feasible embodiments of the present invention, which do not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the protection scope of the present invention. .

100‧‧‧Optical Communication Module

10‧‧‧Ontology

102‧‧‧Light emitting port

103‧‧‧Access

104‧‧‧Optical receiving port

11‧‧‧Auxiliary fixing

20‧‧‧Light emitting unit

22‧‧‧Light Transmitter

25‧‧‧Lens

30‧‧‧Fiber optic components

31‧‧‧Fiber Kit

32‧‧‧Fiber

33‧‧‧Fixed shell

40‧‧‧Optical components

401‧‧‧Clamping slot

405‧‧‧lens structure

406‧‧‧Fiber Slot

40s‧‧‧ gap

50‧‧‧First filter

60‧‧‧Second Filter

70‧‧‧Optical receiving unit

711‧‧‧Fixed bottom wall

712‧‧‧Ring fixed wall

72‧‧‧Optical Receiver

SP‧‧‧Enclosed space

C‧‧‧Optical axis

θ 1‧‧‧Included angle

Claims (8)

An optical communication module comprising: a body, one side of which is concavely formed with a accommodating slot, the body has a light emitting port, a light receiving port and a light channel port, the light emitting port, the The light receiving port and the light channel opening are respectively provided through the body, and correspondingly communicated with the accommodating groove; a light emitting unit is provided on the body and sealing the light emitting port, the light emitting The unit can emit a light beam of a first predetermined wavelength, and the light beam emitted by the light emitting unit can enter the accommodating groove through the light emitting port; a first filter can make a light beam of a second predetermined wavelength The light beam passes, the second predetermined wavelength is different from the first predetermined wavelength; a second filter, which can pass the light beam of the first predetermined wavelength; an optical fiber assembly, which is fixedly provided with the body and correspondingly shields The optical channel port, the optical fiber assembly includes an optical fiber, the optical fiber is used to transmit the light beam emitted by the light emitting unit and the light beam transmitted from an external electronic device; an optical element, which is fixedly arranged in the container In the placement groove, the optical element includes: an engaging groove formed by a recess on one side of the optical element, and the side wall forming the engaging groove is defined as a bottom wall and a ring side wall, and the ring side wall is connected The periphery of the bottom wall, the bottom wall is located at the bottom of the locking groove; a plurality of convex column structures are arranged in the locking groove, and each of the convex column structures is connected to the ring side wall ; A first filter groove, which is formed by the bottom wall of the optical element opposite to the end formed with the engaging groove recessed, the first filter groove is used to set the first filter ； A second filter groove is located at the end of the optical element opposite to the engagement groove formed thereon, and the second filter groove is used to set the second filter so that the second filter Obliquely arranged on the optical element at a predetermined angle; a lens structure located between the second filter groove and the first filter groove, the lens structure and the optical element are integrally formed, The lens structure has a first convex surface facing the first filter groove, and the lens structure has a second convex surface facing the second filter groove; and an optical fiber groove for receiving Part of one end of the optical fiber assembly; and a light receiving unit, which includes a base, a light receiver and a plurality of pins, one side of the base is concavely formed with a groove to form the groove The side wall is defined as a fixed bottom wall and a ring fixed wall, the ring fixed wall is connected to the periphery of the fixed bottom wall, the light receiver is fixedly arranged on the fixed bottom wall; one end of the plurality of pins is fixedly arranged On the fixed bottom wall and electrically connected to the light receiver; the base is arranged in the engaging groove, and a plurality of the convex column structures correspondingly abut against the outer side surface of the ring fixing wall, So that the base is fixedly arranged in the engaging groove; wherein the optical element is fixedly arranged in the accommodating groove, and the light beam emitted by the light emitting unit can pass through the second filter, And enter the optical fiber to be transmitted outward through the optical fiber; the light beam transmitted by the external electronic device through the optical fiber, after being reflected by the second filter, will pass through the lens structure and the first The filter lens enters the light receiver; wherein, the optical element is concavely formed with a first reflection groove on the side where the optical fiber groove is formed, and the bottom wall of the first reflection groove is inclined, And the bottom wall of the first reflecting groove can reflect the light beam emitted by the light emitting unit. The optical communication module according to claim 1, wherein the inclination angle of the bottom wall forming the first reflection groove is between 5 degrees and 10 degrees. The optical communication module according to claim 1, wherein the bottom wall forming the optical fiber groove is recessed inward to form a second reflection groove, the bottom wall of the second reflection groove is inclined, and the second reflection The bottom wall of the groove can reflect the light beam transmitted by the optical fiber. The optical communication module according to claim 3, wherein the inclination angle of the bottom wall of the second reflection groove is between 7 degrees and 15 degrees. An optical element, which is used to be fixedly arranged in a body of an optical communication module, the body has an accommodating groove, and the optical communication module has a light emitting unit, an optical fiber component, and a first filter , A second filter and a light receiving unit, the optical element includes: an engaging groove formed by a recess on one side of the optical element, the side wall forming the engaging groove is defined as a bottom wall and A ring side wall, the ring side wall is connected to the peripheral edge of the bottom wall, the bottom wall is located at the bottom of the engaging groove; a plurality of convex pillar structures are arranged in the engaging groove, and each of the convex pillars The structure is connected with the side wall of the ring; a first filter groove, which is recessed from the bottom wall to the optical element opposite to the end where the engaging groove is formed, and the first filter groove is used To set the first filter; a second filter groove, which is located at the end of the optical element opposite to the engaging groove formed, the second filter groove is used to set the second filter , So that the second filter is obliquely disposed on the optical element at a predetermined angle; a lens structure, which is located between the second filter groove and the first filter groove, the lens structure and The optical element is integrally formed, the lens structure has a first convex surface facing the first filter groove, and the lens structure has a second convex surface facing the second filter groove; and An optical fiber groove for accommodating a part of one end of the optical fiber assembly; and wherein the optical element is fixedly arranged in the accommodating groove, and the light beam transmitted by the external electronic device through the optical fiber passes through the second Filter reflection Then, it will pass through the lens structure and the first filter successively to enter the light receiver; wherein, the optical element is concavely formed with a first reflection groove on the side where the optical fiber groove is formed. The bottom wall of the first reflection groove is inclined, and the bottom wall of the first reflection groove can reflect the light beam emitted by the light emitting unit. The optical element according to claim 5, wherein the inclination angle of the bottom wall forming the first reflection groove is between 5 degrees and 10 degrees. The optical element according to claim 5, wherein the bottom wall forming the optical fiber groove is recessed inward to form a second reflection groove, the bottom wall of the second reflection groove is inclined, and the second reflection groove The bottom wall can reflect the light beam transmitted by the optical fiber. The optical element according to claim 7, wherein the inclination angle of the bottom wall of the second reflection groove is between 7 degrees and 15 degrees.

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